Electrical apparatus.



H. E. REEVE.

ELECTRICAL APPARATUS.

APPLICATION FILED DEG.1,1910.

Patented Dec. 9, 1913.

2 SHEETSSHEET 1.

IIVVEIVTOR WITNESSES coLumm A PLANOORMM c0.. WASHINGTON. u. c,

H. E. REEVE.

ELECTRICAL APPARATUS.

APPLICATION FILED D20. 1, 1910.

1,080,585 Patented Dec. 9, 1913.

2 SHEETS-SHEET 2.

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COLUMBIA PLANOORAPH CO..WA$HINGTON. D. C.

STATES PATENT OFFICE.

HENRY E. REEVE, OF NEW YORK, N. Y.

ELECTRICAL APPARATUS.

To all whom it may concern:

Be it known that I, HENRY E. Reeve, a citizen of the United States, and resident of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electrical Apparatus, of which the following is a specification.

My invention relates particularly to improvements in electric signal devices such as bells.

The object is to provide a simple and cilicient construction which is compact, inclosed and protected and the parts of which are readily accessible and adjustable when necessary.

The invention consists in a construction, the preferred form of which is illustrated in the accompanying two sheets of drawings. The electromagnets, armature, vibrator, contacts and terminals are mounted in a casing the cover of which may be removed at which time the magnets, contacts and terminals may be removed as a unit without affecting the armature. The heads of the magnets are constructed of disks of sheet metal such as brass which are split on one side and secured in grooves on the ends of the magnet cores. The vibrator arm is detachably secured to the removable frame in the easing. The adjustable contact screw is frictionally held by a spring which engages it. The lever, which transmits the force of the armature to the striker through an elastic metallic diaphragm which affords a liquid and gas tight connection between the lever and the casing, is provided with pivots inside the casing.

Figure 1, is a front view of apparatus embodying the improvements of my invention, the cover of the casing being removed. Fig. 2, is a vertical sectional view and side elevation looking toward the left in Fig. 1 and showing the armature and striker construction and support. Fig. 3, is a horizontal section and plan view showing the armature and its supports and also the supports for the frame which carries the electromagnets, contacts and terminals. Fig. l, is a vertical section and front view of the casing showing the armature and its means of support, the magnets, contacts and terminals being removed. Fig. 5, is a vertical sectional View of the casing showing a modiiication of details. Fig. 6, is a View of the under side of the electromagnets, contacts Specification of Letters Patent.

Application filed December 1, 1910.

Patented Dec. 9, 1913.

Serial No. 595,042.

and terminals and their supports. Fig. 7, is a view showing the vibrator contacts and terminals and their supports looking edgcwise at the vibrator contact arm. Fig. 8, is a sectional view of tl'lesupporting frame and contact screw and showing one face of the vibrator contact arm. Fig. 9, is a view of the other face of the vibrator contact arm. Fig. 10, is an elevation of one of the end plates or disks of the electromagnets. Fig. 11, is a fragmentary View of one end of a magnet core showing its head in section.

The casing 1 is of suitable construction and has a depending arm or bracket 2 carrying the gong or bell 3. The transmitting lever 41.- having the usual striker at the lower end passes through the lower wall of the casing and is secured .inside of the casing to the armature 5, the upper end of the lever being bent over as at 41; and pinned or other wise secured to the armature as shown in Figs. 2, 3 and :1- so as to position the parts. The armature 5 is pivotally mounted in the casing by means for instance of two screws r l, 7. lhese screws may be carried by a plate 8 secured in the casing in any suitable mannor for instance by screws or bolts so as to be detachable, (see Fig. 2).

Connecting the lever t with the casing a flexible metallic diaphragn'i consisting of upper and lower disks or members 9 and 10 connected together by a tight joint at their peripheries. The lower member 10 is secured on a hollow sleeve 11 which is secured in the bottom wall of the casing. The lever l passes freely through this sleeve 11. The upper member 9 is secured on a bushing 12 on the lever it. The bushing 12 is also connected with the armature to give greater rigidity. The diaphragm is preferably elongated and oval at its ends as shown in Fig. 3. it is so designed, proportimied and arranged that its axis of least resistance to tlexure is sub-- stantiallv coincident with the axis of the pivots 7 and 7. The diaphragm is of suflicient strength to bear the weight; of the armature and lever so that but little weight and wear need come upon the pivots 7 and 7. The pivots however serve to give the armature and lever a definite axis of llexure even when the parts are subjected to external strain and stress which might tend to deflect them from their proper plane of vibration.

The magnet coils 14, 14 have the usual cores such as 15, 115 secured together by a soft iron yoke 16 at their rear ends. The heads of the coils are preferably formed by means of brass disks such as 17 slotted at one side as at 18 and having a central opening 19 to fit the annular groove 20 in the core. The side of the dlsk opposite the slot 18 may also be slotted as at 21 so as to make the disk more flexible and enable it more readily to be snapped into place on the end of the magnet core. The end of the magnet should have an insulating disk for instance of mica 17 back of the metal disk 17. These metallic heads have a great advantage over the usual rubber heads in that they are not softened or injured by heat. By slotting the disks at one edge magnetic induction and interference is avoided.

The front ends of the cores 15, 15 are connected by a plate 22 which has a flange secured to a flange of plate 23. The angular relation of these plates and flanges is as shown in Fig. 1. The brackets 24 and 25 constitute parts of the wire terminals or binding posts to which the usual circuit wires are secured. These brackets are secured to but insulated from the plate 23.

The vibrator contact members consist of the adjustable screw 26 and the vibrator arm 27. The screw passes through a channel-like support 28, between the walls of which is mounted a bow spring 29 which presses against one side of the screw 26. This spring prevents the screw from working loose but permits it to be readily adjusted when necessary.

The vibrator contact arm 27 is removably carried by a bracket 30 which is secured to the plate 23 but insulated therefrom. The method of mounting the vibrator arm is shown particularly in Figs. 6, 7 and 8. The bracket 30 has two grooves or notches 31 and 32 afiording shoulders for positioning the arm 27. One end of the arm is bent backward as at 33 in hook-like form to fit the bracket 30 in the groove 32. The arm 27 is provided with an off-set or shoulder 34 to fit the bracket 30 in the groove 31. The arm has sufficient initial spring tension so that it presses against the tip of the contact screw 26. The arm may be disengaged from its support by bending the center of the arm toward the left as viewed in Fig. 7 so as to release the shoulder 34 from the groove 81 in the bracket 30. The arm may then be tilted outward as viewed in Fig. 7 so as to release the hook 33 from the bracket 30. One corner of the hook 83 may be bent over at an angle as shown at 35 so as to make it easier to assemble the parts. The armature 5 has attached to it a finger 36 adapted to engage a button 37 on the vibrator arm 27 when the armature is attracted by the magnet. This draws the arm 27 away from the contact screw 26 and opens the circuit. \Vhen the magnet is deenergized by the opening of the circuit, the armature is released and moved to the left as viewed in Fig. 1 so as to allow the vibrator arm to again engage the contact screw 26.

l Vhile the metallic diaphragm before referred to has sufficient elasticity to hold the striker arm and armature in position and to resiliently oppose the action of the electromagnet I prefer to employ in addition a spring such as 88 to reinforce the elastic ac tion of the diaphragm and hold the parts with the armature pressing against the stationary stop 39 (see Fig. 4.) This spring 38 may be conveniently mounted upon the head of the screw 7 as shown in Figs. 1 and 2. The spring is thus readily accessible and may be removed or replaced when desired.

The electromagnets, vibrator contacts and terminals are removably supported in the casin by means of three posts 40, 41 and 42- w hich project forwardly. The frame plate 23 has a perforated lug 43 adapted to engage the post 40 and the magnet plate 16 has perforated lugs 44 and 45 adapted to fit over the post 41. The plate 23 also has a perforated lug 46 adapted to fit on post 42. hen the cover plate 47 of the casing is in place the lugs 45 and 46 are held down in place on the posts 41 and 42 so that the magnets and attached parts are securely held in position. For the purpose of rendering the joints in the casing and cover perfectly tight I prefer to employ a packing or gasket such as 48 of suitable material.

A pin 49 may be used to hold the mechanism in the case on the post 41. By having 1 a handle 50 extending at right angles to the pin it is impossible for I when the cover 47 is in place. 'cover is off the handle may be raised and the pin to work out Then the then the pin may be withdrawn. The pivot screws 7, 7, instead of being carried by a removable plate such as 8 may be mounted in stationary lugs such as 51, 51, Fig. 5. The

armature 5 may have a pin 52 projecting into a recess 53 in the case to serve as a limiting stop if desired as in Fig. 5. Other changes may be made without departing from the spirit or scope of my invention.

hat I claim is 1. A casing having an opening, a cover therefor, a removable element including an electromagnet and cooperating pins and recessed portions carried bysaid casing and said element whereby said removable element including said magnet may be readily inserted and removed in and from the opening in said casing when the cover is removed.

2. A casing having an opening, a cover therefor, a removable element including an electromagnet and cooperating pins and recessed portions carried by said casing and said element whereby said removable element including said magnet may be readily inserted and removed in and from the opening in said casing when the cover is re.- moved and means for locking one of the cooperating pin and recessed portions.

3. In electrical apparatus, a casing having an opening, a cover therefor, a plurality of posts projecting forwardly in said casing, a frame having perforated lugs adapted to slip on to said posts and an electromagnet and vibrator contacts carried by said frame and removable therewith.

4. In electrical apparatus, a casing having an opening, a cover therefor, a plurality of posts projecting forwardly in said casing, a frame having perforated lugs adapted to slip on to said posts and an electromagnet and vibrator contacts carried by said frame 'and removable therewith and means for locking said frame in place.

5. In an electrical apparatus, a casing, supporting posts therein, an electromagnet, parts secured to said magnet, said parts having perforated lugs detachably co-acting with said posts, and vibrator contacts carried by said parts.

6. In electrical apparatus, a casing, a lever passing through one wall thereof, an armature connected to the inner end of said lever, a frame removably secured in the we ing, an electromagnet and vibrator contacts carried by said frame, said frame, magnet and contacts being removable from said casing without disturbing said armature.

7. In electrical apparatus, a casing, a lever passing through one wall thereof, an armature connected to the inner end of said lever, a frame removably secured in the casing, an electromagnet and vibrator contacts carried by said frame, said frame, magnet and contacts being removable from said casing without disturbing said armature and means for locking said frame in place.

8. In electrical apparatus, a casing, a lever passing through a wall thereof, a pivotal support for said lever inside of said casing, a flexible diaphragm connecting said lever to said casing and arranged inside of said casing and consisting of two metallic plates connected together at their peripheries, one of said plates being connected to said casing and the other plate being connected to said lever.

9. Apparatus comprising a casing, a plate removably secured in said casing, said plate and easing having a passage, a flexible metallic diaphragm secured to said plate inside of said casing, a lever secured to said diaphragm and passing through said passage in said plate and easing, pivots therefor carried by said plate, said diaphragm eonstituting a tight connection between said lever and casin 10. Apparatus comprising a casing, a le' ver for transmitting motion through one wall of said casing, an elastic and tight connection between said lever and said casing and arranged inside of said casing and comprising two thin metallic disks connected at their peripheries, the inner disk being connected near its center to said. lever and the outer disk connected near its center to said casing and a pivot for said lwer inside said casin 11. A. casing having an. opening, a cover therefor, a removable element including an electromagnet, cooperating parts carried by said casing and said element whereby said removable element including said magnet may be readily inserted and is guided and held in position but may be readily removed therefrom, and an armature mounted adjacent said magnet.

12. Apparatus comprising a casing, a lever for transmitting motion through a wall of said casing, a duplex metallic diaphragm arranged inside of said casing and connecting said lever and casing and a pivotal support for said lever.

13. Apparatus comprising a casing, a lever for transmitting motion through a wall of said casing, a duplex metallic diaphragm arranged inside of said casing and connecting said lever and casing, and a pivotal support for said lever, said support being also arranged inside of said casing and protected thereby.

14. Signal apparatus comprising a casing having a removable cover, an armature in said casing, a striker connected to said armature and extending through a wall of said casing, a durable flexible water-tight metallic connection between said striker and said casing, an electromagnet and vibrator contacts, and a frame carrying said magnet and contact-s and removably mounted in said. casing.

15. Signal apparatus comprising a casing having a removable cover, an armature in said casing, a striker connected to said armature and extending through a wall of said casing, a durable flexible water-tight metallic connection between said striker and said casing, an eleetromagnet and vibrator contacts, and a frame carrying said magnet and contacts and removably mounted in said casing and a catch for holding said removable parts in place in said casing.

16. In electrical apparatus, the combination with a casing, an electromagnet in the casing, an armature arranged to be operated by the electromagnet and vibrator contacts, said armature having a part for engaging one of said vibrator contacts whereby said contact is adapted to be operated by the armature, of a frame removably engaged in the casing and carrying the vibrator contacts whereby both of said contacts and said frame may be readily removed from the CZISIIIO'.

17. Apparatus comprising a casing, a lever for transmitting motion through a wall of said casing, a duplex metallic diaphragm connecting said lever to said casing and pivots for said lever having their axis substantially coincident With the normal axis of fieXure of said diaphragm, said diaphragm and pivots being arranged inside of said casing.

18. In electrical apparatus, the combination of a casing, a vibrating armature mounted in said casing, a frame removably secured in the casing, and an electromagnet and vibrator contacts carried by the said frame, said armature having a part for en: gaging one of said contacts whereby said contact is operated by said armature, the said frame, said electromagnet and said contacts being readily removable from the easing Without disturbing the armature Which is mounted in the casing.

HENRY E. REEVE.

l/Vitnesses R0131. S. ALLYN, ELISI-IA WV. MCGUIRE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

